Closure for bottles and jars and method of affixing same.



H. H. HULL.

CLOSURE FOR BOTTLES AND JARS AND METHOD OF AFFIXING SAME.

APPLICATIONHLED DEC-1.3, 1912.

Patented Feb. 1, 1916.

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HERBERT H.

HULL, OF CLEVELAND, OHIO, ASSIGNOR TO THE PERFECTION CAP & CAN COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

CLOSURE FOR BOTTLES AND JAB-S AND METHOD OF AFFIXING SAME.

Specification of Letters Patent.

Patented Feb. 1, 1916.

Application filed December 13, 1912. Serial No. 736,576.

- To all whom it may concern:

' principle Be it known that I, HERBERT H. HULL, a citizen of the United States,. and a resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement in Closures for Bottles and Jars and Methods of Affixing Same, of which the following is a specification, the

of the invention being herein .explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

The subject of the present invention is a closure for bottles, cans and the like, and is designed to provide a tighter and more secure closure around the top of the receptacle. It has heretofore been the practice to introduce a thin strip of flexible packing material such as a rubber washer, between the top of the receptacle and the cap. One objection to this method of securing a closure is that unless the cap is very securely fastened to the receptacle, there is so little pressure put upon the packing material that it admits a small amount of air to the contents of the receptacle.

In the present invention I have provided a cap which is adapted to retain a packing strip description set forth in detail certain mechanism and one method of-utilizing the same embodying the invention,

means constituting, however, but one of various ways in which the principle of the invention may be used.

In said annexed drawing: Figure 1 is a view in perspective showing the cap in position on a receptacle; Fig. 2 is a central vertical section showing the cap when first applied; Fig. 3 is a similar section showing the completed closure; Fig. 4 is a section showcap, be readily seen that the form of the packing between it and the side of the recep tacle adjacent to the top. The construction ofthe cap is it is forced to expand laterally such disclosed 4 ing the cap about to be compressed by the dies; Fig. 5 is a section showing the cap when compressed; while Figs. 6 and 7 show a modification in construction.

In Fig. 1 there is shown a receptacle 1 which may be of any desired form, but is here shown to be a glass, of the type used to preserve jellies, etc. The cap consists of a top 2 provided with a downwardly extendmg flange 3 provided with an inturned bead 7 at its lower edge. The precise form of the bead is of little consequence so long as it is adapted to hold a gasket or strip 4 of flexible packing material between it and a horizontal shoulder 5 formed on the flange 3. In some cases the packing material might be held between the bead and the top of the dlspensing with the shoulder 5. It will strip and the shape of the flange will necessarily bemade to conform with each other, while the construction of the first-named element will be controlled to a large extent by the form of the receptacle. Extending around the flange is an indentation or inwardly directed corrugation 6 which engages the packing strip and forces it into a tight and resilient engagement with the receptacle.

In Fig. 2, I show the cap and packing material as assembled when first placed on the receptacle. The flange is given an initial slight indentation which will cause a slight pressure on the packing material and will control the direction of lateral expansion of the flange during the operation to be described hereinafter. In this way a very satisfactory closure can be secured as the packing strip is firmly held between the shoulder and the bead.

In Fig. 3 thevcap is shown after the final compression. The indentation has been deepened. by vertical compression and the packing material is forced against the receptacle, thus giving an absolutely air-tight closure. The form of the cap before and after this final compression is best shown in Figs. 4 and 5 respectively. Dies 8 and 9 are used to engage the cap as shown, and the movement of these two dies toward each other compresses the flange of the cap in a vertical direction. The result is, of course, 4 to deepen the corrugation in the flange, the deepened corrugation or indentation being inwardly directed and uniform around the first, as indicated by' the dotted lines, and

has a deeper indentation; consequently not only is the ring of packing forced bodily I inward into contact with the outside of the receptacle neck by the compression of the material of such ring in a vertical direction, but at the same time the deepening corrugation positively displaces or presses such material in a radially inward direction at all points. The ring of packing is thus put under heavy pressure, which secures an air tight contact between the same and the flange on onesideand' the. receptacle on the other. lutely secure and is so tight that the cover can be removed only with the aid of suitable tools.

It will be understood that for the bead 7, a simple curling in of the lower edge of the. flange may be substituted,-or in fact any formation that will serve to retain the underside of the ring of packing material when the flange is compressed. This is illustrated at 10 in Figs. 6 and 7, along with several other modi cations. The latter include a ledge or shoulder 11 formedintegrally with the neck of the receptacle and spaced from the upper edge thereof'a distance equal to the height of the flange after it has been compressed. In T-other words, this shoulder subserves the same function as the lower di'emember 9in Figs. 4 and 5. A further modification consists in the. .omission of the shoulder 5, the upper edge of the packing ring 4 contacting directly with the under face of the flat topof the cover. The relation of the parts before the compression of the flange is clearly shown in Fig. 6, while the succeeding Fig. 7 shows the effect of the operation of. the die 12 which corresponds with die 8 in the previously described arrangement.

Other modes of applylng the principle of my invention may be employed instead of the one'explained, change being made as re- 'gards the mechanism and steps herein dis:

closed, provided the means or steps stated by any of the following claims or the equivalent of such stated means or steps be employed. v i

I therefore particularly point out and distinctly claim as my invention 1. As an article of manufacture, a closure for receptacles of the character described, comprising a cover. rovided with a downwardly extending ange adapted tosurround the mouth of the receptacle, said flange being formed with a relatively shallow encircling corrugation adapted to be rendered deeper upon. being compressed and having its convex face directed inwardly;

The final closure is thus made absoand an annular gasket located within said flange in line w1th such corrugation and adapted normally to slip over such receptacle-mouth, such corrugation being adapted upon being thus compressed to force said gasket bodily inward into engagement with such mouth.

2. As an article of manufacture, a closure for receptacles of the character' described, comprising a cover provided with a down wardly extending flange adapted to surround the mouth of thereceptacle, said flange having its loweredge formed with an intu-rned bead, and, above such bead, with a relatively shallow encircling corrugation adapted to be rendered deeper upon being compressed in a direction at right angles to the cover and having its convex face directed inwardly; and an annular gasket'located within said flange above the bead thereon and in line with such corrugation, said gasket being adapted normally toslip over such receptacle-mouth and such corrugation being adapted upon being thus compressed to force said gasket bodily into engagement with suchmouth'.

, 3, The combination with a receptacle of the character described, of a closure comprising'a cover provided with a downwardly extending flange surrounding the mouth of said receptacle, such flange. being formed with an encircling corrugation having its convex face directed inwardly; and anannular gasket located-within said flange in line with such corrugation, the latter being compressed so as, to force said gasket bodily in- Ward into engagement with such receptacle neck. 1

4. The combination with a receptacle of "the character described, of a closure comprising a cover provided with a downwardly extending flange surroundingv the neck. of said receptacle, said flange having its lower edge formed. with an inturned bead and, above such bead with an encirclingcorrugation having its convex face directed mwardly;.and an annular gasket locatedwithinsaid flange above the bead thereon and in line with said'corrugation, the latter being compressed so as to force said gasket bodily inwlgrd into-engagement with such receptacle nec 5. The method of aflixing to a receptacle of the character described a closure comprising a cover provided with a downwardly extending flange adapted to surround the mouth of said receptacle, which consists in preliminarily forming such flange with a relatively shallow encircling corrugation adapted to be rendered deeper upon being compressed, such. corrugation'having its convex face directed inwardly; locatin an an- I nular gasket within said flange in lme with vex face directed inwardly; locating an annular gasket within said flange in line with such corrugation, said gasket being adapted normally to slip over the receptacle mouth, placing said cover with said gasket in place over such receptacle-mouth, and thereupon compressing such corrugation to force said gasket bodily inward into engagement with such mouth.

Signed by me, this 11th day of December,

, HERBERT H. HULL. Attested by- D. T. DAVIES, J no. F. OBERLIN. 

